Error: 8f_adder.vwf.vt(29): near "8": syntax error, unexpected INTEGER NUMBER, expecting IDENTIFIER or automatic or TYPE_IDENTIFIER or static

** Error: d:/computer/modelsim_ase/win32aloem/vlog failed.

Executing ONERROR command at macro ./8f_adder.do line 4

Error: can't read "FileWatch(fileName)": no such element in array

Error. \

时序仿真一直这样错，不知道怎么改